Well the orbiting mirror project is nothing but investor bait. So many reasons why something like that could never work, only a fool would believe that company is anything but a scam.
As for starlink, we've been filtering out satellites from astrophotography for decades. It's pretty much a non-issue to all but the most sensitive equipment, which already had an expiration date due to the increasing number of non-starlink satellites. Newer satellites, including new star link satellites, also use a non-reflective coating to even further reduce the impact.